classdef_0">class="tags" href="/tags/Lei.html" title=类>类和函数的关系(class和def)，对象的功能

class="prism language-class="tags" href="/tags/PYTHON.html" title=python>python">class="token keyword">class class="token class-name">studentclass="token punctuation">(class="token builtin">objectclass="token punctuation">)class="token punctuation">:
    class="token keyword">def class="token function">speakclass="token punctuation">(selfclass="token punctuation">)class="token punctuation">: class="token comment">## 哪个对象调用了这个方法，self就是那个对象；可以把self理解为一个形参
        class="token keyword">printclass="token punctuation">(class="token string">"%s 说：我今年%s岁" class="token operator">% class="token punctuation">(selfclass="token punctuation">.nameclass="token punctuation">, selfclass="token punctuation">.ageclass="token punctuation">)class="token punctuation">)
class="token keyword">class class="token class-name">teacherclass="token punctuation">(class="token builtin">objectclass="token punctuation">)class="token punctuation">:
    class="token keyword">def class="token function">sayclass="token punctuation">(selfclass="token punctuation">)class="token punctuation">:
        class="token keyword">printclass="token punctuation">(class="token string">"%s说：%s是我的学生"class="token operator">%class="token punctuation">(selfclass="token punctuation">.name_1class="token punctuation">, selfclass="token punctuation">.name_2class="token punctuation">)class="token punctuation">)
    class="token keyword">def class="token function">showclass="token punctuation">(selfclass="token punctuation">)class="token punctuation">:
        class="token keyword">printclass="token punctuation">(class="token string">"%s展示%s的作品"class="token operator">%class="token punctuation">(selfclass="token punctuation">.name_1class="token punctuation">, selfclass="token punctuation">.name_2class="token punctuation">)class="token punctuation">)
class="token comment">#class="tags" href="/tags/Lei.html" title=类>类student 实例化一个对象john，class="tags" href="/tags/Lei.html" title=类>类teacher实例化一个对象mary，mary相当于是object，say(self)和show(self)的self都是mary
john class="token operator">= studentclass="token punctuation">(class="token punctuation">)
mary class="token operator">= teacherclass="token punctuation">(class="token punctuation">)
class="token comment"># 给对象添加属性
johnclass="token punctuation">.name class="token operator">= class="token string">"约翰"
johnclass="token punctuation">.age class="token operator">= class="token number">19
maryclass="token punctuation">.name_1 class="token operator">= class="token string">"玛丽"
maryclass="token punctuation">.name_2 class="token operator">= johnclass="token punctuation">.name
class="token comment"># 调用class="tags" href="/tags/Lei.html" title=类>类中的 speak()方法
johnclass="token punctuation">.speakclass="token punctuation">(class="token punctuation">)
maryclass="token punctuation">.sayclass="token punctuation">(class="token punctuation">)
maryclass="token punctuation">.showclass="token punctuation">(class="token punctuation">)

约翰 说：我今年19岁
玛丽说：约翰是我的学生
玛丽展示约翰的作品